I remember noticing the Hyur faces affecting bust size. Thanks for reminding me about it. I have a cancelled Hyur woman with the "bustiest 1.0 face" (writing that is just so wrong) and her loaded appearance data when I checked just now is at 50 instead of the 25 default. I can't be sure of course, but I remember doing a lot of back and forth comparisons of both kinds of kitties back in the 1.0 beta and I didn't notice a difference in the torso. The difference is probably just something they decided for ARR transfers for some reason.
I have agree with you with the coatee. I always crafted facing a wall when wearing it so that other players couldn't look down her shirt or up her extremely short skirt.